EP 2995693 B1 20200311 - EXTRACTION/SEPARATION METHOD
Title (en)
EXTRACTION/SEPARATION METHOD
Title (de)
EXTRAKTIONS-/TRENNVERFAHREN
Title (fr)
PROCÉDÉ D'EXTRACTION/SÉPARATION
Publication
Application
Priority
JP 2014184316 A 20140910
Abstract (en)
[origin: EP2995693A1] An extraction/separation method involving the step of contacting an organic phase containing a dialkyldiglycol amic acid extractant R 1 R 2 NCOCH 2 OCH 2 COOH with an aqueous solution containing scandium and zirconium and/or hafnium, thereby extracting zirconium and/or hafnium into the organic phase. The purity of scandium can be efficiently increased by the simple step of solvent extraction.
IPC 8 full level
C22B 3/26 (2006.01); C22B 34/14 (2006.01); C22B 59/00 (2006.01)
CPC (source: BR EP RU US)
B01D 11/04 (2013.01 - BR); C01G 25/00 (2013.01 - RU); C01G 27/00 (2013.01 - RU); C22B 3/26 (2021.05 - EP RU US); C22B 3/44 (2013.01 - RU); C22B 34/14 (2013.01 - EP RU US); C22B 59/00 (2013.01 - EP US); C22B 34/14 (2013.01 - BR); Y02P 10/20 (2015.11 - EP US)
Citation (examination)
- WO 9736011 A1 19971002 - CABOT CORP [US], et al
- YUJI SASAKI ET AL: "Complexation and Back Extraction of Various Metals by Water-soluble Diglycolamide", ANALYTICAL SCIENCES, vol. 23, no. 6, 1 January 2007 (2007-01-01), pages 727 - 731, XP055041618, ISSN: 0910-6340, DOI: 10.2116/analsci.23.727
Designated contracting state (EPC)
DE FR
DOCDB simple family (publication)
EP 2995693 A1 20160316; EP 2995693 B1 20200311; AU 2015218466 A1 20160324; AU 2015218466 B2 20200416; BR 102015021477 A2 20161004; BR 102015021477 B1 20211005; CN 105400970 A 20160316; CN 105400970 B 20190101; JP 2016056415 A 20160421; JP 6194867 B2 20170913; KR 101847688 B1 20180410; KR 20160030450 A 20160318; MY 173171 A 20200102; PH 12015000288 A1 20170322; PH 12015000288 B1 20170322; RU 2015138503 A 20170314; RU 2015138503 A3 20190326; RU 2685835 C2 20190423; US 2016068930 A1 20160310; US 9822428 B2 20171121; ZA 201506648 B 20170222
DOCDB simple family (application)
EP 15182474 A 20150826; AU 2015218466 A 20150826; BR 102015021477 A 20150903; CN 201510574489 A 20150910; JP 2014184316 A 20140910; KR 20150126080 A 20150907; MY PI2015002079 A 20150820; PH 12015000288 A 20150828; RU 2015138503 A 20150909; US 201514848537 A 20150909; ZA 201506648 A 20150909